#include<bits/stdc++.h>
using namespace std;
using ll = long long;
const int N = 5e3 + 10;
int n;
ll a[N];
ll dp[N][N], mx[N][N];
int main() {
ios::sync_with_stdio(0);
cin.tie(0);cout.tie(0);
cin >> n;
for(int i = 1; i <= n; i++)
cin >> a[i];
for(int i = 1; i <= n; i++) {
for(int j = i; j <= n; j++) {
mx[i][j] = max(mx[i][j - 1], a[j]);
}
}
for(int len = 2; len <= n; len++) {
for(int l = 1; l <= n - len + 1; l++) {
int r = l + len - 1;
dp[l][r] = max({dp[l][r - 1], dp[l + 1][r], a[l] + a[r] + mx[l + 1][(l + r) / 2]});
}
}
int q;
cin >> q;
while(q--) {
int l, r;
cin >> l >> r;
cout << dp[l][r] << '\n';
}
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
2 |
Correct |
1 ms |
1108 KB |
Output is correct |
3 |
Correct |
1 ms |
1220 KB |
Output is correct |
4 |
Correct |
1 ms |
1108 KB |
Output is correct |
5 |
Correct |
1 ms |
1228 KB |
Output is correct |
6 |
Correct |
1 ms |
1108 KB |
Output is correct |
7 |
Correct |
1 ms |
1108 KB |
Output is correct |
8 |
Correct |
1 ms |
1108 KB |
Output is correct |
9 |
Correct |
1 ms |
1108 KB |
Output is correct |
10 |
Correct |
1 ms |
1108 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
2 |
Correct |
1 ms |
1108 KB |
Output is correct |
3 |
Correct |
1 ms |
1220 KB |
Output is correct |
4 |
Correct |
1 ms |
1108 KB |
Output is correct |
5 |
Correct |
1 ms |
1228 KB |
Output is correct |
6 |
Correct |
1 ms |
1108 KB |
Output is correct |
7 |
Correct |
1 ms |
1108 KB |
Output is correct |
8 |
Correct |
1 ms |
1108 KB |
Output is correct |
9 |
Correct |
1 ms |
1108 KB |
Output is correct |
10 |
Correct |
1 ms |
1108 KB |
Output is correct |
11 |
Correct |
527 ms |
241192 KB |
Output is correct |
12 |
Correct |
511 ms |
241100 KB |
Output is correct |
13 |
Correct |
513 ms |
241152 KB |
Output is correct |
14 |
Correct |
514 ms |
241268 KB |
Output is correct |
15 |
Correct |
520 ms |
241128 KB |
Output is correct |
16 |
Correct |
521 ms |
240608 KB |
Output is correct |
17 |
Correct |
521 ms |
240552 KB |
Output is correct |
18 |
Correct |
529 ms |
240472 KB |
Output is correct |
19 |
Correct |
519 ms |
241112 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Runtime error |
196 ms |
848 KB |
Execution killed with signal 11 |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
2 |
Correct |
1 ms |
1108 KB |
Output is correct |
3 |
Correct |
1 ms |
1220 KB |
Output is correct |
4 |
Correct |
1 ms |
1108 KB |
Output is correct |
5 |
Correct |
1 ms |
1228 KB |
Output is correct |
6 |
Correct |
1 ms |
1108 KB |
Output is correct |
7 |
Correct |
1 ms |
1108 KB |
Output is correct |
8 |
Correct |
1 ms |
1108 KB |
Output is correct |
9 |
Correct |
1 ms |
1108 KB |
Output is correct |
10 |
Correct |
1 ms |
1108 KB |
Output is correct |
11 |
Correct |
527 ms |
241192 KB |
Output is correct |
12 |
Correct |
511 ms |
241100 KB |
Output is correct |
13 |
Correct |
513 ms |
241152 KB |
Output is correct |
14 |
Correct |
514 ms |
241268 KB |
Output is correct |
15 |
Correct |
520 ms |
241128 KB |
Output is correct |
16 |
Correct |
521 ms |
240608 KB |
Output is correct |
17 |
Correct |
521 ms |
240552 KB |
Output is correct |
18 |
Correct |
529 ms |
240472 KB |
Output is correct |
19 |
Correct |
519 ms |
241112 KB |
Output is correct |
20 |
Runtime error |
196 ms |
848 KB |
Execution killed with signal 11 |
21 |
Halted |
0 ms |
0 KB |
- |